if a river flows south at 10 km/h and a boat moves north against the current at a rate of 18km/hr, what is the net actual speed of the boat in the water
8km/hr north
To find the net actual speed of the boat in the water, we need to consider the effect of the river current.
Let's break down the given information:
- The river flows south at a speed of 10 km/h.
- The boat moves north against the current at a speed of 18 km/h.
Since the boat is moving against the current, the speed of the current needs to be subtracted from the boat's speed to determine the net speed.
To do this, subtract the speed of the river current (10 km/h) from the boat's speed (18 km/h) to get the net speed of the boat in the water.
Net speed = Boat's speed - Speed of the river current
Net speed = 18 km/h - 10 km/h
Net speed = 8 km/h
Therefore, the net actual speed of the boat in the water is 8 km/h.